1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS ISO 13832:2013Aerospace Wire, aluminiumalloy and copper-cladaluminium conductors General performancerequirementsBS ISO 13832:2013 BRITISH STANDARDNational forewordThis British
2、 Standard is the UK implementation of ISO 13832:2013.The UK participation in its preparation was entrusted to TechnicalCommittee ACE/6, Aerospace avionic electrical and fibre optictechnology.A list of organizations represented on this committee can beobtained on request to its secretary.This publica
3、tion does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2013. Published by BSI StandardsLimited 2013ISBN 978 0 580 77041 8ICS 49.060Compliance with a British Standard cannot confer immunity fromle
4、gal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 30 April 2013.Amendments issued since publicationDate Text affectedBS ISO 13832:2013 ISO 2013Aerospace Wire, aluminium alloy and copper-clad aluminium conductors General performan
5、ce requirementsAronautique et espace Conducteurs en alliage daluminium chemis cuivre pour cbles lectriques Exigences gnrales de performanceINTERNATIONAL STANDARDISO13832First edition2013-03-15Reference numberISO 13832:2013(E)BS ISO 13832:2013ISO 13832:2013(E)ii ISO 2013 All rights reservedCOPYRIGHT
6、PROTECTED DOCUMENT ISO 2013All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission.
7、Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester.ISO copyright officeCase postale 56 CH-1211 Geneva 20Tel. + 41 22 749 01 11Fax + 41 22 749 09 47E-mail copyrightiso.orgWeb www.iso.orgPublished in SwitzerlandBS ISO 13832:2013ISO 1383
8、2:2013(E) ISO 2013 All rights reserved iiiContents PageForeword ivIntroduction v1 Scope . 12 Normative references 13 Terms and definitions . 14 Characteristics 24.1 General . 24.2 Conductor materials . 24.3 Material and metal plating for individual strands and code 24.4 Electrical and mechanical cha
9、racteristics . 24.5 Construction of conductors 35 Tests and requirements 35.1 Tensile strength and elongation . 35.2 Mass per unit length . 35.3 Resistance 45.4 Strand-plating continuity . 45.5 Strand-plating adherence 45.6 Strand-plating thickness . 46 Packaging and labelling 56.1 Packaging . 56.2
10、Designation and labelling 5Bibliography .11BS ISO 13832:2013ISO 13832:2013(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO
11、technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates clo
12、sely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria
13、needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2. www.iso.org/directivesAttention is drawn to the possibility that some of the elements of this document may be the subject of patent rig
14、hts. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received. www.iso.org/patentsAny trade name used in this docu
15、ment is information given for the convenience of users and does not constitute an endorsement.The committee responsible for this document is ISO/TC 20, Aircraft and space vehicles, Subcommittee SC 1, Aerospace electrical requirements.iv ISO 2013 All rights reservedBS ISO 13832:2013ISO 13832:2013(E)I
16、ntroductionThis International Standard is the general performance requirements of the wires with aluminium and copper-clad aluminium conductors for aerospace.The need for International Standardization in the Aerospace industry cannot be overemphasized. Multinational projects abound in the constructi
17、on industry and all major airlines use equipment produced in different continents. The mixture of specifications and standards combine to increase the chances of maintenance errors, no more so than in the interconnection system. Power plant manufacturers in France may use conductors and terminations
18、 manufactured in Europe mating at the firewall with terminations and conductors manufactured in North America. This can result in different contacts, crimp tools and settings, and insulating stripping tools being required to work on mating connectors. The same would apply to many types of equipment.
19、The requirement for close or “clipped” tolerance, lightweight conductors can provide the opportunity to address many of these problems by overcoming the long-standing issue of AWG versus metric sizes.This International Standard introduces a list of aluminium-based lightweight conductors for aerospac
20、e cables. This list supplements the existing list of standard metric conductors which has not received worldwide acceptance. The list is derived from EN 3719, prEN 4651 and MIL-W-7072(MS25191).The constructions presented are those which are considered to be standards within the emerging rules govern
21、ing aircraft cables, e.g. seven strands minimum, copper-clad aluminium for size 22 and smaller. However, it does take advantage of the lightest weight for each size. The resultant standard is therefore a mixture of conductors with metric and imperial origins which gives the greatest advantage to con
22、structors and users for the future.This International Standard: obeys existing rules regarding conductors for aircraft; gives the lightest weight for each size/rating currently used; standardizes the conductor cross-sectional area throughout the world aerospace industry; enables the standardization
23、of terminations and the crimp tools used to produce the joints; reduces the number of insulation stripping tools required to service aircraft; enables the world industry to concentrate its efforts on improving interconnection technology knowing that a world market exists; enables regulatory authorit
24、ies (CAA, FAA, JAA, etc.) to make rules regarding the interconnection system which applies internationally.All these will, by reducing complexity, reduce servicing errors and contribute to aircraft safety. ISO 2013 All rights reserved vBS ISO 13832:2013BS ISO 13832:2013Aerospace Wire, aluminium allo
25、y and copper-clad aluminium conductors General performance requirements1 ScopeThis International Standard specifies the dimensions, electrical characteristics and mechanical characteristics of aluminium-based and copper-clad aluminium (CCA) conductors, for lightweight aircraft electrical cables and
26、aerospace applications. It applies to stranded conductors over the nominal cross-sectional area range 0,22 mm2to 107 mm2inclusive.It is not applicable to conductors for conventional copper-based cables, fire-resistant cables or for thermocouple extension cables. Conductors for copper-based cables ar
27、e specified in ISO 2635, for fire-resistant cables are specified in ISO 1967 and for thermocouple extension cables are specified in ISO 8056-1.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. Fo
28、r dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ASTM B 566, Standard Specification for Copper-Clad Aluminum WireISO 8815, Aircraft Electrical cables and cable harnesses Vocabulary3 Terms and
29、definitionsFor the purposes of this document, the terms and definitions given in ISO 8815 and the following apply.3.1conductor codenumeric or alphanumeric code which designates conductor size and propertiesSOURCE: ISO 2635:2003, 3.13.2worldwide wire gaugeWWGidentification system, similar to the Amer
30、ican wire gauge (AWG) system from which it has been derived, for an international designation of wire cable sizesSOURCE: ISO 2635:2003, 3.23.3copper-clad aluminiumCCAwire per ASTM B 566 class 15A which consists of an aluminium core with a continuous cladding of copper thoroughly bonded to the core t
31、hroughout Note 1 to entry: See Figure 2.INTERNATIONAL STANDARD ISO 13832:2013(E) ISO 2013 All rights reserved 1BS ISO 13832:2013ISO 13832:2013(E)4 Characteristics4.1 GeneralThe dimensions, electrical resistance, mechanical properties and mass of the conductors shall conform to the values given in Ta
32、ble 5 for CCA wires and Table 6 for aluminium or aluminium alloy wires. The shapes of conductors stranded in concentric lay, bunch or rope lay are illustrated in Figure 1. The wires shall consist of stranded CCA, aluminium or aluminium alloy strands shown in Figure 2.4.2 Conductor materialsThe condu
33、ctors in accordance with this standard of nominal cross-sectional area 0,25 mm2(code 002) to 0,40 mm2(code 004) shall be produced from a 1 + 6 strands construction. The central strand is a copper alloy strand or equivalent in ISO 2635, surrounded by six CCA strands (see Figure 1).The conductors shal
34、l consist of individual CCA strands (see ASTM B 566 class 15A), aluminium strands or aluminium alloy strands with the following composition, for cross-sections of greater than 0,25 mm2:For aluminium: Annealed aluminium (EC grade 99,5 %). See Table 1.For copper: ETP(Electrolytic touch pitch) copper p
35、urity 99,9 % min.For aluminium alloy: See Table 2.The conductors shall be manufactured from unused materials that have been exposed only to processes essential to their manufacture and application.4.3 Material and metal plating for individual strands and codeThe individual strands may be: uncoated C
36、CA (code A); CCA with tin plating (code B); CCA with silver plating (code C); CCA with nickel plating (code D); pure aluminium (code E); aluminium alloy with nickel plating (code F)Plating thicknesses shall be at least 1,0 m for code C and according to Table 3 for code D.4.4 Electrical and mechanica
37、l characteristicsThe maximum resistivity at 20 C shall be 2,78 108m for CCA and 3,0 108m for aluminium or aluminium alloy.The elongation at rupture on the complete conductor taken from the finished wire shall be 6 %.The tensile strength of the complete conductor taken from the finished wire shall be
38、 at least 138 MPa (138 N/mm2) for CCA and 105 MPa (105 N/mm2) for aluminium or aluminium alloy.The elastic limit (at 0,2 % wire elongation) of the complete conductor taken from the finished wire shall be at least 90 MPa (90 N/mm2) for CCA.2 ISO 2013 All rights reservedBS ISO 13832:2013ISO 13832:2013
39、(E)4.5 Construction of conductors4.5.1 Lay lengthFor CCA conductor up to 5 mm2cross-section inclusive (code 050), concentric conductors are used. The length of lay of the strands of a concentric conductor, checked over the outside layer of a test piece 1 m long, shall be between eight times and 16 t
40、imes the maximum diameter of this conductor.For CCA conductor for sectional areas between 9 mm2(code 140) and 107 mm2(code X70), aluminium or aluminium alloy conductor for sectional areas between 5 mm2(code 050) and 107 mm2(code X70), the conductor comprises concentric or bunched conductors twisted
41、together. The length of lay of the strands for the basic concentric or bunched conductors shall not exceed 30 times the diameter of the concentric or bunched conductor in question.The lay for concentric (or bunched) conductors, measured over the outer layer of the conductor, shall be between eight t
42、imes and 16 times the maximum conductor diameter.In all cases the lay of the outer layer shall be left-hand.4.5.2 JointsThe conductors shall be free from any joints. Each strand comprising the conductors may, however, include soldered or brazed or butt joints.The distance between two joints in indiv
43、idual strands shall exceed 3 m, measured between different strands.4.5.3 CompactionCompaction of the conductor, causing deformation of the strands with damage to the plating, is not permitted.5 Tests and requirements5.1 Tensile strength and elongation5.1.1 MethodUse a tensile tester capable of 1 % a
44、ccuracy, with jaw separation rates of 200 mm/min to 300 mm/min (copper) and 40 mm/min to 60 mm/min (copper alloy). Test the whole conductor. The initial jaw separation shall be 245 mm to 255 mm.5.1.2 RequirementTensile strength and elongation at break of the conductor prior to insulation shall be as
45、 given in Table 5 or Table 6, based on an average of three tests.5.2 Mass per unit lengthWeigh at least 1 m of conductor. The mass per unit length for each size shall be as given in Table 5 or Table 6. ISO 2013 All rights reserved 3BS ISO 13832:2013ISO 13832:2013(E)5.3 Resistance5.3.1 MethodMeasure
46、the electrical resistance of the conductor (in ohms) and correct to 20 C using the following formula:RT= R201 + 0,004 0(T 20) (1)whereT is the temperature, in degree Celsius, of the conductor under test;RTis the resistance of the conductor at temperature T;R20is the resistance at 20 C.5.3.2 Requirem
47、entThe values calculated shall not exceed those given in Table 5 or Table 6.5.4 Strand-plating continuity5.4.1 MethodTake three strands no less than 150 mm in length from a conductor previously straightened by hand.Degrease the strands without causing damage then wipe, using a clean dry cloth. Ensur
48、e that any strands cleaned in this manner are not touched by hand. Immerse the strands for 30 s in a solution of sodium polysulfide of density 1,142 g/cm3at 20 C, then wash carefully in distilled water. In addition immerse silverplated strands for 15 s in a hydrochloric acid solution of density 1,08
49、8 g/cm3at 20 C and wash carefully in distilled water. Examine the strands with the naked eye.5.4.2 RequirementNo adherent or distinct black spots shall be observed. Any blackening occurring less than 15 mm from each end shall be disregarded.5.5 Strand-plating adherence5.5.1 MethodTake three strands not less than 150 mm in length from a conductor previously straightened by hand. Wind each strand around itself, using half the specimen length as a mandrel so as to form three adjacent turns.For platin
